The Technical Notes for the 2010-2014 HIV & STD Burden by Health District
analysis details preparation of Los Angeles County (including cities of Long Beach and Pasadena)
HIV surveillance and STD surveillance data and supporting maps which factored into the final visualization of our data.
Hot Spot Analyses
Chloropeth maps such as the bivariate maps showcase the spread of the disease burden across Los
Angeles County, and at first glance,
the patterns suggest certain areas to be more highly burdened than others. However, these patterns often disregard
key factors that can influence the display of disease burden, such as the area of administrative boundaries used or
population data. Statistical analysis allows us to identify key clusters that have higher counts of each HIV or STD
than what you might expect from random chance. To assess for those statistically significant "hot spots", we used
the Getis-Ord Gi* tool in ArcMap 10.2.2.
Other Bivariate Maps of Interest
- Though the following bivariate maps showcasing HIV, syphilis, gonorrhea and chlamydia relative to race/ethnicity were not used to inform the 2010-2014 HIV
& STD Burden by Health District analysis, they may be helpful for planning for a specific HIV or STD.
Suggested Citation: Division of HIV and STD Programs, Los Angeles County Department of Public Health.
2010-2014 HIV & STD Burden by Health District.
Published May 2017. Accessed [date]